Wash-board plate



(No Model.)

J. H. & 0. T. LAPHAM.

WASH BGARD PLATE.

No. 339,667. Patented Apr. 13, 1886.

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JOSEPH H. LAPHAM AND OWEN T. LAPHAM, OF CLEVELAND, OHIO.

WASH BOARD PLATE.

SPECIFICATION forming part of Letters Patent No. 339,667, dated April 13, 1886'.

Application filed December 14, 1885. Serial No. 185,590. (No model.)

To all whom. it may concern:

Be it known that we, JOSEPH H. LAPHAM and OWEN T. LAPHAM of Cleveland, in the county of Cuyahoga and State of Ohio, have shown. Fig. 2 is a view of the opposite side of the plate. Fig. 8 is an edge view of the plate.

Like letters of reference refer to like parts in the several views.

The wood-work or frame of the wash-board is or may he like that of ordinary wash-boards; hence a description thereof is not essential in this place.

A is the Zinc plate of the board, and the surface shown in Fig. 1 corresponds to the side B in Fig. 8, in which Care prominent ribs extending across the plate. Midway between said ribs and longitudinally therewith is a rib, D, of slight elevation as compared with the ribs 0.

In the groove or channel between the ribs 0 and D are struckup swells E, at regular distances apart and partly in the side of the ribs G and D, as shown in Fig. 1. Between the said swells are narrow incavations F, thereby forming an alternating series of swells and incavations or depressions across the plate between the ribs 0 and D, forming in the face of the plate a Vertical succession of ribs or corrugations and a transverse series of alternating swells and depressions, substantially as shown in Fig. 1. As a consequence, the opposite side of the plate will be negative that of the side above described, as shown in Fig.

2, in which are deep grooves or channels G,

conforming to the ribs 0 in Fig. 3, and ribs a and 12 corresponding to the ribs a and b in Fig. 3; also in the ribs 1) is a series of depressions, e, the opposite sides of the swells E, above described.

It will be obvious from the above description of the'plate that one side thereof consists, mainly, of ribs a considerable distance apart, forming a coarse corrugated surface adapted for washing and rubbing heavy, large, and coarse articles, and having between the said ribs numerous depressions for retaining the wash-water while the said articles are being rubbed thereon, whereas, on the opposite or negative side of the plate, Fig. 2, the ribs are much closer together, forming a finer corrugated surface, and in each alternate rib a series of alternating elevations and depressions. This latter side, for having the ribs close together, is adapted for washing finer and more delicate articles than could be rubbed with safety on theside shown in Fig. 1, thereby rendering the wash-board more useful for washing coarse, heavy, and lighter finer articles.

What we claim as our invention, and desire to secure by Letters Patent, is-

In washboards, a metal plate having on one side thereof large transverse ribs 0, and, al-

ternating therewith, ribs D, of slight elevation as compared with said ribs 0, and in the grooves between the ribs an alternating series of swells and depressions, and in the reverse side of the plate, grooves G, ribs (0 and b, and having in the ribs I) a series of depressions, substantially as described.

In testimony whereof we affix our signatures in presence of two witnesses.

JOSEPH H. LAPHAM. OWEN T. LAPHAM.

W'itnesses: J. H. BURRIDGE, W. H. BURRIDGE. 

